Technical Specifications
Parameter Specification / Typical Value
Manufacturer / Brand Eaton
Model Number LZMN1-A20
Product Line NZM
Rated Current (Iₙ) 20 A
Poles 3
Frame Size NZM1-A
Rated Operational Voltage (Uₑ) 400/415 V AC (IEC) / 690 V AC
Rated Insulation Voltage (Uᵢ) 690 V AC
Rated Frequency 50/60 Hz
Rated Ultimate Breaking Capacity (I꜀ᵤ) Typically 25 kA / 36 kA @ 400V (Must be verified from datasheet)
Trip Unit Type Thermal-Magnetic (Non-Adjustable)
Overload Protection (Ir) Fixed at 20A
Short-Circuit Protection (Im) Fixed magnetic trip
Installation Fixed Type
Standards Compliance IEC 60947-2
Electrical Life Several thousand cycles (e.g., 5,000)
Mechanical Life Tens of thousands of cycles (e.g., 20,000)
Terminal Torque Refer to official manual (e.g., ~ 6 N·m)
The Eaton LZMN1-A20 is a 20-ampere, 3-pole, compact molded case circuit breaker (MCCB) from the renowned Eaton NZM series.
The NZM series represents a line of high-performance, compact MCCBs designed for a wide range of industrial and commercial applications. The "A" in the model number typically indicates a specific frame size (in this case, a smaller, compact frame). This breaker is designed to provide reliable overload and short-circuit protection for motors, power distribution circuits, and other electrical equipment.